Device for adjusting reflectors



M. P. GALE. DEVICE FOR ADJUSTING RBFLBGTORS.

No. 44,717. Patented'0ct418, 1864.

UNITED STATES PATENT OFFICE.

MOSES F. GALE, OF BOSTON, MASSACHUSETTS.

DEVICE FOR ADJUSTING REFLECTORS.

Specification of Letters Patent No. 44,717, dated October 18, 1864.

To all whom it may concern:

Be it known that I, Mosns F. GALE, of Boston, of the county of Suffolkand State of Massachusetts, have invented a new and useful Mechanism foradjusting a Reflecting-Mirror, and Particularly that of a Solar Camera;and I do hereby declare the same to be fully described in the followingspecification and represented in the accompanying drawings, of whichFigures 1, and 2, are side views. Fig. 3, an end view, and Fig. 4, atransverse section of a mirror and its supporting tube and frame asprovided with my invention.

In these drawings, A, denotes the reflector or mirror as hinged at oneextremity (as shown at, m,) to one end of a tube, B, which is open ateach end, and is so fixed within a frame or plate, C, as to be capableof being freely revolved axially therein.

The machinery for effecting the rotary movement of the tube, which,while being revolved, turns the mirror also around, consists of atoothed annulus or row of teeth (a), and a pinion (b) the said annulusbeing fixed to and concentrically on the tube. The pinion is attached toa shaft which has a bearing in the supporting frame or a stud, c,projecting therefrom, and is provided with a milled head, (Z.

There is also applied to the mirror a mechanism for varying its angle ofinclination to the plane of the outer end of the tube, such mechanismbeing described as follows: A toothed annulus, is placed concentricallyon the tube, (13,), and should be capable of being freely revolved onthe tube. The said annulus supports an inclined wire or cam, (9,) whichis shaped and extended from the annulus as shown in the drawings. The

wire (g) runs through a rib, h, projecting from the mirror. Furthermore,a pinion (2') fixed to a sliding shaft provided with a milled head (Z)engages with the toothed annulus, 7'. By taking hold of the head (Z) andrevolving it, the annulus will be turned on the tube and will so movethe cam wire, g, (which should be curved as shown in Fig. 3) as to causeit to vary the inclination of mirror to the plane of the end of thetube. hen it may be desirable to revolve the tube, the mirror and theannulus (f) without revolving the pinion of such annulus, the saidpinion should first be moved out of engagement with the annulus, whichmay be effected by simply laying hold of the milled head and moving theshaft of the pinion endwise.

By means of the two mechanisms for moving the mirror, its plane ofreflection may be readily adjusted at any time so as to cause thereflected rays of the sun to pass through the tube in directionsparallel to its axis.

I am aware of the invention of David A. Voodward, as patented on thefifth day of March, A. D. 1861, it being for adjusting or operating thereflector of a solar camera, and therefore I do not claim such.

Vhat I claim as my invention, is-

The arrangement and combination of the hinge, (1a,), the rib, (h), thecam (9,) the toothed annulus (f), and the pinion and its shaft togetherand with the mirror, A, the tube, B, and the supporting plate or frame,C, substantially in manner and for the purpose as hereinbeforespecified.

M. F. GALE. lVitnesses R. H. EDDY, F. R. HALE, J r.

